RCDD · Question #307
A pay telephone using coins needs to be installed in a public area. In the specifications, it is required that the telephone shall meet the ADA (American with Disabilities Act) requirement for front…
The correct answer is D. 1220 mm (48 in). The ADA specifies maximum reach heights for wheelchair users at public equipment such as pay telephones to ensure accessibility for individuals with mobility impairments.
Question
A pay telephone using coins needs to be installed in a public area. In the specifications, it is required that the telephone shall meet the ADA (American with Disabilities Act) requirement for front reach using a wheelchair. What will be the maximum reachable height or the value of "X"?
Exhibit
Options
- A760 mm (30 in)
- B864 mm (34 in)
- C1170 mm (46 in)
- D1220 mm (48 in)
- E1370 mm (54 in)
How the community answered
(36 responses)- A3% (1)
- B14% (5)
- C6% (2)
- D78% (28)
Why each option
The ADA specifies maximum reach heights for wheelchair users at public equipment such as pay telephones to ensure accessibility for individuals with mobility impairments.
760 mm (30 in) represents a minimum reach height or floor clearance dimension, not the maximum forward reach height specified by the ADA.
864 mm (34 in) corresponds to other ADA dimensional requirements such as maximum height for side-reach scenarios or counter heights, not the maximum forward reach limit.
1170 mm (46 in) is below the correct ADA maximum forward reach of 1220 mm (48 in) and does not match the standard's specified value.
Under the ADA Standards for Accessible Design, Section 308.2 (Forward Reach), the maximum allowable height for an unobstructed forward reach from a wheelchair is 1220 mm (48 in) above the floor. This dimension ensures that a seated wheelchair user can access controls, coin slots, and handsets without overreaching. A pay telephone must comply with this measurement when a front-reach approach is the design requirement.
1370 mm (54 in) exceeds the ADA maximum forward reach limit of 1220 mm (48 in) and would be inaccessible to many wheelchair users.
Concept tested: ADA maximum forward reach height for wheelchair accessibility
Source: https://www.ada.gov/law-and-regs/design-standards/2010-stds/#308-reach-ranges
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